Ace Books  
1953
Conan the Conqueror

1959
The Macabre Reader
Anthology featuring REH
1964  Almuric
1970  Almuric
1979 
The Blade of Conan


The Gods of Bal-Sagoth
  The Howard Collector
  Tigers of the Sea
  Worms of the Earth
  Pigeons from Hell
  The Sowers of Thunder
  Three-Bladed Doom
1980
Conan of the Isles
de Camp, Carter

The Spell of Conan


Conan: The Treasure of Tranicos

1981
Conan: The Flame Knife


Conan of Aquilonia
de Camp, Carter
1983  The Iron Man with The Adventures of  Dennis Dorgan
  Heroes of Bear Creek
  The She Devil
1984  Cormac Mac Art: Tigers of the Sea

Conan
Howard, de Camp, Carter

Conan of Cimmeria
Howard, de Camp, Carter

Conan the Adventurer
Howard, de Camp

Conan the Avenger
Howard, Nyberg, de Camp

Conan the Buccaneer
de Camp, Carter

Conan the Conqueror
Howard, de Camp

Conan the Freebooter
Howard, de Camp

Conan the Usurper
Howard, de Camp

Conan the Wanderer
Howard, de Camp, Carter

Conan the Warrior
Howard, de Camp
1986  Sword Woman
  The Lost Valley of Iskander
1987  Son of the White Wolf 
  Black Vulmea's Vengeance
  Swords of Shahrazar
2000
Shadows Bend - Fiction
Robert E. Howard, H. P. Lovecraft, and Clark Ashton Smith
versus Cthulhu